GST Calculator
Calculate GST inclusive and exclusive amounts instantly — CGST, SGST or IGST for intra-state and inter-state supplies.
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How to use GST Calculator
- Enter the amount (taxable value or invoice total).
- Choose whether the amount is exclusive or inclusive of GST.
- Select the GST rate (or enter a custom rate).
- Pick Intra-State (CGST+SGST) or Inter-State (IGST).
- Click Calculate to see taxable value, tax breakup and grand total.
Frequently asked questions
What is the difference between exclusive and inclusive GST?
Exclusive means GST is added on top of the amount. Inclusive means the amount already includes GST and the calculator backs out the taxable value.
When should I use CGST+SGST vs IGST?
Use Intra-State (CGST+SGST) when supplier and place of supply are in the same state. Use Inter-State (IGST) for supplies across states or for exports (as applicable under GST law).
Is this calculator legally binding?
No. It is for estimation and education only. Always verify with current GST rules and your tax advisor before filing or invoicing.
Note: Intra-state supplies attract CGST + SGST (each half of the GST rate). Inter-state supplies attract IGST (full rate). This calculator is for estimation purposes. Always verify with current GST law and your tax advisor.